Sideboard



FIG. 1 is a front elevational view of a sideboard showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a second perspective view thereof;

FIG. 9 is a third perspective view thereof; and,

FIG. 10 is a fourth perspective view thereof.

The broken lines showing of the screws in the drawing are forillustrative purposes only and form no part of the claimed design.

CLAIM The ornamental design for a sideboard, as shown and described.